Spring tooth harrow



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SPRING Too/TH HARROW. v No. 381,171.A PatntedApL 17, 1888,

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Akunnen A. Rosnor GENEsEO, New YORK.'

SPRING-TOOTH HARROW.

' SPECIPICArroNforming'parr of Letters Patentplvo. 381,171, dates Apri;l17, lese.: I Application tiled November 14, 18E7. Serial NofO. (Nomodel.) v l T a/ZZ whom tun/dy concern.- :1

Be it knownthat I,"REUBEN A.- RosE, of

Geneseo, New York, have invented certain,

Improvements inv SpringfTooth Harrows, of which the following' is laspeciiication, refer- `ence being had to the accompanying drawings.

My improvements in spring-tooth harrows relate more particularly to animprovedvpivoted adjustable guard or fender' attached to the bars of theharrow, and arranged so that the depth at which the teethacton the earthmay be varied, and which guard also serves to smooth the surface and toprevent the harrow from becoming stuckl or loaded in soft ground. p

My invention is fully described and illustrated in the followingspecification and accompanying'drawings, and the novel feature thereofspecified in the claims annexed to'V .the said` specification.

In the accompanying drawings, representing my improvements inspring-tooth harrows, Figure l is a plan view. Fig. 2'is ay rearelevation.', Fig. Sfis aside view. Fig. @iis a section on the linea: x,Fig. 1. Fig. 5 1s 'a section representing a modified constructlon canadj ustthemselves tothe irregularities o'f the ground over which itpasses. Provision ismade for the draft of the barrow in any suitablemanner-'as, for instance, by the draw-bar E, fastened to the sections bythe links F F. The evener is attached to the centerpf the draw-bar.

The teeth B are of any ordinary or preferred construction, beingattached, preferably, tothe under side of the bars A A, and curvingupward and backward, so that their points enter the ground below and inrear of the bars. As represented in Fig. l, the teeth .are arrangedfront and rear bars/of the barrow-frame, and V- PATENT ,l OFFICE, i` AQparallel, or nearly so, `with the length of 'the bars. YThe guardsconsist of plates of metal,'o'r Y' of wood Vfacedvv'ith metal, attachedto the bars byV 'hinges or ,other Vsuitable devices whichl permit theadjustment ofthe rearedges of the A guards vto and yfrom the bars. 1Theguards are inclined downward and backward, so'that' they will readilypass over `any roughness 'or 6o,4 i obstruction. The hinges GGshown intheac@ companying drawings consist of the straps'H,

lfastened tothe barsl and provided at theirforward ends with eyes orpintleswhiohjr tit correspondingV parts on the straps I, which; are.secured to the guardsG.

-The straps H may be straight and fastened to the front or lower sidesof the bars; `but I'v prefer, for durability and, facility of attachmentor removal,to bend them over the tops of the bars, as represented morefully Yin Fig. 4.

The hinge is located slightlyin front ofl and belowlthe lower frontcorner of the bar, so that I the; guard -may be foldedvup nearly 'orquite t parallel with they under surface of the bar, if desired, asindicated by the dotted lines in Fig. 4. The guards are thusthrown outof opera- -tion entirely, and the'harrow works in exactly the samemanneras one of ordinary construe.' A

tion. The-straps' I are secured to the guards "by bolts J, Fig. 4,having countersunk heads.

Prov-ision is y'made for adjusting the inclinay the bars in any suitablemanner.' In Fig. .4 I fl have shown this connection asconsisting of a Ybolt, ll), passingthrough the bar and any one of a series of holes inthe arm; but it `is-obvious that any other suitable device maybeused 'vfor this purposesuch, for instance, as a screwT and clamp. u y l Theguards are'made of the fullvlength of the bars, or nearly so,and'present a continu-f.

ous surface'extending lengthwise` ofthe bars, which bears on the groundyand smooths it'as theharrow. advances, and which also serves to4 Vlimitthe depth to which the teeth enter Athe* ground. 'As will beobservedfromthe drawings, the `guards bear on the ground immedi-LHy ately infront of the teeth attached to the bars provided with the guards. Theguards are attached to the front and rear bars of each of thebarrow-sections.

In a modified form ofthe construction shown in Fig. 5 the guard isrepresented as consisting of a lwooden board, M, having a sheetmetalfacing, N, attached to its lower side.rv

Increased durability is secured by thickening the rear or bearing edgeof the metallic facing N, as indicated in the said figure. The bars A ofthe frame are connected together by suitable cross-bars, P. The holes inthe arms K should correspond in distance from the guards, so that allthe guards can be set at the same angle with the frame, to secureuniform action of all the teeth.

g Whenr the guards arefolded up, theharrow acts in all respects like oneof the ordinary construction. j

I am aware that spring-toothed harrows and cultivators have heretoforebeen constructed with adjustable guards to vary the depth of the furrowsmade by the teeth, and I do not wish to be understood as attempting toclaim such construction broadly.

1. The combination, with the harrow-frame having springteeth mounted onits front and rear bars, of guards hinged at their forward edges to saidfront and rear bars in advance of the springteeth, the rear edges ofsaid guards being connected by a rigid adjustable connection to theirrespective supporting bars, whereby the depth of the furrow made by suchteeth may be regulated, substantially as de scribed.

2. The combination, with the barrow-frame having spring-teeth mounted onits front and rear bars, of guards hinged at their forward edges to saidfront and rear bars and extending throughout their entire length inadvance of the springteeth, the rear edges of said guards having theupwardly-extending arms k adj ustably connected to their respectivesupporting-timbers, substantially as described. v

3. The combination, with the harrow formed of two sections, the frontand rear timbers of each of which are inclined back from the line ofdraft, said timbers having spring-teeth secured thereto, of guardshinged at their forward edges to the under side of each of said timbersin advance of the spring-teeth, the rear edges of said guards beingprovided with the rigid arms k and adjustable connections between saidarms and their respective supporting-timbers, substantially asdescribed.

4. The combination, with a. spring tooth harroW, of an inclined guard,C, hinged to the barrow-timbers at its forward edge and ad' i j ustabl yconnected thereto at 4its rear edge, and consisting of the wooden plateM, having metal facing N, provided with a thickened wearingsurface atthe rear edge, substantially as described.

5. The combination, with the bar A of a spring-tooth harrow, of theinclined pivoted adjustable guard C, extending `continuously from end toend of the bar and attached thereto by the hinges G, consisting of thestrap secured to the upper side of the guard and the strap H bent overthe upper side of the bar and secured thereto, substantially asdescribed.

REUBEN A. ROSE. Witnesses:

Gao. B. SELDEN, JOHN F. SKINNER.

